Drilling stainless steel is a mechanical method of processing a material to create a hole. The main parameters in this process are the depth and diameter of the hole. Our company offers services for drilling holes not only in stainless steel, but also in other materials.
Drilling hole types
When drilling various metals, you can make two types of holes:
The main result that can be achieved by drilling holes in a stainless steel sheet is the laying of a cable or the placement of another part of the part and fasteners in a steel sheet or machined part.
How to drill stainless steel
Any drilling of stainless material begins with specialists making a recess at a certain point using a center punch. After this, the workpiece is secured in a special clamping device. Next, at this point, the machine drill makes a hole in the stainless steel.
Before work begins, a certain speed of rotation of the drill and the force of pressure on the workpiece are set. The higher the parameters set, the more important overall performance is. Our specialists select a drill based on predetermined parameters and according to the material being processed, in this case stainless steel. This takes into account that the diameter of the resulting hole will be greater than the diameter of the drill itself.
In order to be able to drill deeper and more accurately into stainless steel, specialists carefully adjust the machine before each job. All drills that we use in our work are distinguished by proper sharpening. In addition, a conductor bushing is used.
Equipment for drilling stainless steel
The use of modern machines makes it possible to increase accuracy using numerical control. Drilling holes in stainless steel is carried out with cutting resistant tools that are made of high-speed steel with 18% tungsten, or tungsten steel, which is alloyed with approximately 10% cobalt. In addition, equipment made of cast alloys of the “stellite” type or with cutting carbide plates is used.
Standard stainless steel drills have a point angle of 188 degrees and a helix angle of 30 degrees. Usually short drill bits are used. In order to make holes with a small diameter and large depth, drills with a small pitch and a sharpening angle of 130 to 140 degrees are used.
The equipment used for drilling stainless steel is powerful and massive, with a rigid structure. Since chips can scratch the surface of the part, the front edge of the tool is equipped with a chipbreaker.
In order to improve the quality of holes in stainless steel, reduce the cutting force and increase the durability of the cutting edge, lubricating and cooling liquid is supplied to the working area under pressure. As a rule, sulfur oils and water emulsions are used (at high speeds).
Drilling stainless steel to order is a rather labor-intensive process. Drills take on a particularly heavy load, as they become very hot and grind down during operation. In order to increase their service life, they are treated with special lubricating coolants.
Source: http://metall-24.ru/sverlenie-nerzhaveyki
How to drill through stainless steel? Stainless steel drills. Subtleties of drilling stainless steel
Stainless steel is actively used in the construction industry, allowing the construction of durable and strong structures without the risk of corrosion damage. However, the strength qualities and, in general, physical characteristics of such alloys create many problems at the stage of installation activities, when spot machining is required. For example, creating holes is one of the most popular operations of this kind, allowing you to prepare technological areas for future fasteners.
Accordingly, the question arises: how to drill stainless steel? The task is not easy and requires the use of special tools. Also, the technique of directly performing the work requires the performer to know certain nuances of the process.
What tool to use for drilling?
First, the type of tool that can be used to perform such an operation efficiently and safely is determined. If we are not talking about production, where the use of a drilling machine would be quite justified, then the choice will be between a drill and a hammer drill. Of course, the eye of an inexperienced user will immediately fall on the hammer drill as a more powerful unit. But not everything is so obvious.
Indeed, an average hammer drill will be much more productive than an electric drill, but it also has a more massive body, has an impressive weight and, in principle, is oriented towards working with brick and concrete.
How to drill stainless steel with a hammer drill? You will have to work in initially uncomfortable conditions, since the massive structure will not provide room for maneuverability, and this is the key to successful processing of solid alloys. The emphasis will have to be on the physical stabilization of the tool, which will not be possible without an additional side handle.
As for the drill, then, of course, the emphasis should be on professional models with sufficient power reserves - at least 1500 W in the case of network devices, and from 18 V if you need a cordless tool for remote work. But in both cases, the design of the drill is optimal for working with stainless steel. By the way, in addition, it would not be amiss to provide a useful set of functions - electronic speed control, a switch lock button and reverse movement.
Choosing the right drill
It is advisable to give preference to cobalt drills made from high-speed steel alloys of the grades HSS (M35), HSSCo5, P6MK5, etc. The intended purpose of such equipment is to make holes in difficult-to-cut and stainless workpieces.
For example, the R6M5K5 drill contains 5% cobalt, which significantly increases the red resistance of the product.
In other words, the glow of a drill with critical overheating can occur only if the established standards for the working session time are exceeded, but not in the usual normal drilling mode.
Moreover, even intensive use of the element will not reduce its wear resistance and hardness. These qualities can be explained by the special production technology using the grinding method, which eliminates the internal stress of the metal.
The working part of the drill can be performed in different ways, depending on the required cutting technique. For example, spiral models have a rod with helical edges and grooves that remove chips. This is a universal option for household work, characterized by reliability and decent drilling quality.
As an alternative, a step drill can be offered, but it is more suitable for production where it is necessary to make several holes of different formats in short periods of time without changing equipment.
You should also pay attention to the sharpening angle of the stainless steel drill, which can range from 100° to 140°. Which angle would be preferable? For steels, it is better to choose models at 130-140°. Lowering this indicator makes the drill suitable for soft materials such as duralumin and brass.
Selecting a drill by shank type
Since the equipment will experience increased mechanical loads due to vibrations during operation, it is important to consider the type of connection to the chuck. The most common is the cylindrical key type hitch.
In particular, HSS metal drills from Inforce are designed for it, with a tensile strength reserve of up to 900 N/mm2.
As experts note, the transmission of torque in this design is not the most successful, but you don’t have to worry about the risks of jamming.
Another shank option is hexagonal. In this case, fixation is ensured by a three-jaw chuck with rigid positioning of each face. The fastening is reliable, but the mechanics of handling such equipment are quite difficult. If you need to perform serial drilling, then manipulating the replacement of the nozzle will cause a lot of trouble.
Preparation of lubricants and cooling materials
High-performance mechanical processing of metal alloys is accompanied by increased loads with temperatures brought to critical values. To minimize such effects, lubricants and coolants are used for drilling under load. In this part, it is necessary to provide for two points - the very mechanics of supplying the composition and its recipe.
As for the first, in one-time events you can wet the work area manually as it heats up. Automatic systems are usually implemented in the form of a pump connection - for example, from a car pump. The optimal composition of the mixture will include a combination of machine oil and sulfur. Technical additives that increase the viscosity of the oil can also be used as an additional modifier.
Drilling process
The tool is immediately adjusted to low or medium speeds, since stainless steel does not tolerate high speeds well - this can damage the edges or drill. The workpiece is installed on a firmly fixed base. It is advisable to use a metal workbench with a vice. Direct mechanical contact is made only when the optimal drill speed is reached. Then they start cutting.
The cobalt drill on stainless steel is directed strictly perpendicularly under light pressure. No deviations or jerks should be allowed. Moreover, even stopping is not advisable, since a failure in the pace of movement will, in principle, negatively affect the structure of the hole. The process ends with support for initial revolutions. The speed is reduced and the device is turned off only after removing the drill from the hole.
Features of working with hardened stainless steel
There are often situations when hardened metal is not amenable to even cobalt-based HSS drills. This usually applies to sheets with a thickness of more than 6-7 mm. How to drill through stainless steel in this situation?
The solution will be either to use diamond bits for cutting glass, or to use a nozzle with a fine-grained alloy and soldering. The second option is offered in the Bosch line. German developers produce a unique Multi Construction line with a distinctive feature in the form of a blue belt on spirals. Thanks to the centering tip and AWB soldering, this type of drill can even cope with hardened stainless steel.
Features of working with stainless steel railings
The difficulties of working with such a structure are determined by the round shape of the handrails, and sometimes by the presence of special chrome coatings, which make alignment difficult. The master’s task will be to securely fix the pipe using a vice, as well as special drilling tactics.
How to work with stainless steel railings? First of all, the cutting point is designated. This is done by punching and hammering. With a light blow, a hole is marked from which the material will be processed. Then take any small-format drill.
At this stage, it is important to only slightly deepen the point at low speeds. Moreover, the end of the drill must be lubricated with machine oil. Then, using a full-size cobalt nozzle, a hole of the required size is formed in two passes.
Safety precautions when drilling
The main operational factors that increase the risk of injury are electricity and vibration. Electric shock is deadly, so it is important to always monitor the position of the cable. Under no circumstances should it enter the work area. Moreover, initially it is better to give preference to drill models with double electrical insulation.
Then another question - how to drill through stainless steel with minimal discomfort from vibrations? The fact is that long-term and systematic work with construction tools ultimately affects the state of the nervous system, vision and respiratory organs through strong vibrations.
The solution will be to use a standard vibration damping system, as well as install additional spring devices on the body. For example, hinged damping devices create a shock-absorbing effect, virtually eliminating perceptible vibrations.
General recommendations for work progress
Much of the workflow will depend on the specific conditions and characteristics of the tool. But there are also universal rules for performing critical drilling operations, which are recommended by experts:
- Lubrication control. Rapidly draining oil will not give the desired effect. To stabilize it, you can first develop a “bathtub” around the hole, and then throughout the entire working process the drill tip will be in optimal condition.
- Use the drill functionality. Do not ignore reverse gear and speed control. There are situations when they not only make work easier, but also prevent unpleasant situations.
- Subtleties of drilling stainless steel when creating through holes. In situations where the drill comes out from the back side, burr may appear (blocking of the cutters on the edge). Initially placing a block of wood under the drilling point from the outside will help to avoid such a wedge.
Conclusion
A high-quality electric drill, combined with a properly selected drill of the required diameter, is more likely to meet expectations in creating a hole of the desired format. But how much will such an event cost if it is performed at home without the help of a specialist?
Cobalt or pobedite drills for stainless steel are estimated at about 150-200 rubles. An electric drill will cost about 3-5 thousand rubles. Moreover, you should choose from the families of manufacturers of the same Bosch company, for example, Makita, Metabo or Hitachi. By the way, you can safely purchase drills in the same lines.
Source: https://FB.ru/article/398753/kak-prosverlit-nerjaveyku-sverla-po-nerjaveyke-tonkosti-sverleniya-nerjaveyuschey-stali
How to drill through stainless steel with a drill
Stainless steel is actively used in the construction industry, allowing the construction of durable and strong structures without the risk of corrosion damage. However, the strength qualities and, in general, physical characteristics of such alloys create many problems at the stage of installation activities, when spot machining is required. For example, creating holes is one of the most popular operations of this kind, allowing you to prepare technological areas for future fasteners.
Accordingly, the question arises: how to drill stainless steel? The task is not easy and requires the use of special tools. Also, the technique of directly performing the work requires the performer to know certain nuances of the process.
First, the type of tool that can be used to perform such an operation efficiently and safely is determined. If we are not talking about production, where the use of a drilling machine would be quite justified, then the choice will be between a drill and a hammer drill. Of course, the eye of an inexperienced user will immediately fall on the hammer drill as a more powerful unit. But not everything is so obvious.
Indeed, an average hammer drill will be much more productive than an electric drill, but it also has a more massive body, has an impressive weight and, in principle, is oriented towards working with brick and concrete.
How to drill stainless steel with a hammer drill? You will have to work in initially uncomfortable conditions, since the massive structure will not provide room for maneuverability, and this is the key to successful processing of solid alloys. The emphasis will have to be on the physical stabilization of the tool, which will not be possible without an additional side handle.
As for the drill, then, of course, the emphasis should be on professional models with sufficient power reserves - at least 1500 W in the case of network devices, and from 18 V if you need a cordless tool for remote work. But in both cases, the design of the drill is optimal for working with stainless steel. By the way, in addition, it would not be amiss to provide a useful set of functions - electronic speed control, a switch lock button and reverse movement.
Drill design parameters: what to consider?
The working part of the drill can be performed in different ways, depending on the required cutting technique. For example, spiral models have a rod with helical edges and grooves that remove chips. This is a universal option for household work, characterized by reliability and decent drilling quality.
As an alternative, a step drill can be offered, but it is more suitable for production where it is necessary to make several holes of different formats in short periods of time without changing equipment.
You should also pay attention to the sharpening angle of the stainless steel drill, which can range from 100° to 140°. Which angle would be preferable? For steels, it is better to choose models at 130-140°. Lowering this indicator makes the drill suitable for soft materials such as duralumin and brass.
How to drill stainless steel at home? — Handyman's Handbook
Stainless steel is actively used in the construction industry, allowing the construction of durable and strong structures without the risk of corrosion damage.
However, the strength qualities and, in general, physical characteristics of such alloys create many problems at the stage of installation activities, when spot machining is required.
For example, creating holes is one of the most popular operations of this kind, allowing you to prepare technological areas for future fasteners.
Accordingly, the question arises: how to drill stainless steel? The task is not easy and requires the use of special tools. Also, the technique of directly performing the work requires the performer to know certain nuances of the process.
First, the type of tool that can be used to perform such an operation efficiently and safely is determined. If we are not talking about production, where the use of a drilling machine would be quite justified, then the choice will be between a drill and a hammer drill. Of course, the eye of an inexperienced user will immediately fall on the hammer drill as a more powerful unit. But not everything is so obvious.
Indeed, an average hammer drill will be much more productive than an electric drill, but it also has a more massive body, has an impressive weight and, in principle, is oriented towards working with brick and concrete.
How to drill stainless steel with a hammer drill? You will have to work in initially uncomfortable conditions, since the massive structure will not provide room for maneuverability, and this is the key to successful processing of solid alloys. The emphasis will have to be on the physical stabilization of the tool, which will not be possible without an additional side handle.
As for the drill, then, of course, the emphasis should be on professional models with sufficient power reserves - at least 1500 W in the case of network devices, and from 18 V if you need a cordless tool for remote work.
But in both cases, the design of the drill is optimal for working with stainless steel.
By the way, in addition, it would not be amiss to provide a useful set of functions - electronic speed control, a switch lock button and reverse movement.
How to drill a hole in stainless steel?
» Welding work at the dacha.
Stainless steel is used in many household items. Elements of furniture, cutlery, dishes - it’s hard to imagine a comfortable life without these items. What can we say about industry, where stainless steel is used everywhere.
What kind of metal is this? Most people think of a plate or piece of iron that does not rust in water. In fact, stainless steel combines a whole class of alloys with many useful properties, including corrosion resistance. It is obtained by adding metals that are resistant to aggressive environments. Depending on the amount of material, an alloy with different characteristics is produced.
Today, the most popular in industry is the so-called “food grade stainless steel”. It has found its application in factories producing cutlery, water, milk and other food products.
Metal is processed quite simply. On an industrial scale, it is easily bent, extruded, and cut into various shapes. At home, it is better to use an angle grinder for this.
How to drill stainless steel?
Let's look at a few important rules that should be followed when drilling stainless steel. They are also true for other types of carbon steel:
- We set the rotation speed of the electric drill to minimum speed. About 120-150 revolutions are quite enough to work with metal of any thickness. If your tool does not have a speed switching function, then work should be carried out by short pressing the “start” button. Thus, the drill will not be able to accelerate to its maximum speed.
- If you often work with metal, buy a drill stand. It is not very expensive, but it greatly simplifies the process.
- If the chips darken over time, this indicates a dull drill or overheating of the material. It is worth starting work with small diameter drills, for example, a four. Then you can make a hole of the required size, which will be as smooth and neat as possible. This is especially important when drilling stainless pipes. To achieve an ideal result, you need to use special stepped drills.
- Large diameter holes (from 15 mm) are made with a “crown”.
Drill cooling methods
The biggest mistake that amateurs often make is dipping the drill in water or other liquid. That is, first the master works “dry”, then dips the heated drill into water. Do not do this under any circumstances. For cooling, you should use olive oil or fat.
To achieve maximum effect and high speed, buy cobalt drills (golden color). The material does not just cover the surface of the instrument, it is part of it. Although some manufacturers really just coat the drill for better glide.
- Corners are different
- Stainless steel marking
Source: http://samanka.ru/kak-luchshe-prosverlit-otverstie-v-nerzhavejke.html
January 19 - Epiphany of the Lord: what you can and cannot do, signs
In the Russian Orthodox Church, which uses the Julian calendar, Epiphany is celebrated on January 19, which in 2020 falls on a Sunday.
What can you do on Epiphany?
Traditionally, on Epiphany, people attend church, pray, stock up on holy water, and congratulate their family and friends on the holiday. There are legends that on this day, blessed water has special properties and can cure even serious illnesses and cleanse the soul and body. It is worth stocking up on holy water for a whole year; it is possible to take it in the morning on an empty stomach along with morning prayer.
The well-known tradition of plunging into an ice hole is not suitable for everyone, because this requires great fortitude, courage and good preparation (it is worth hardening the body, accustoming it to the cold). It is recommended to swim after visiting church and receiving communion. People advise especially sick people to take a dip, it helps them heal. It is also popular to take “ice baptism” to cleanse oneself from sins, especially for military and police officers who used weapons in their service.
At Epiphany, a festive table is set, the whole family gathers together. As tradition says, the first to eat is the one who last plunged into the icy consecrated water. The owner of the house must consecrate the house, ventilate it, and scatter salt in the corners. This will protect the family from evil spirits.
Another beautiful ritual that can be performed at Epiphany is the release of white doves into the sky. This symbolizes the end of the winter holiday cycle.
What not to do on Epiphany
Any quarrels and curses, anger towards relatives and friends are unacceptable. Any physical labor is prohibited, including housework and crafts (sewing, knitting, embroidery). After Baptism, it is not recommended to guess. This is due to the fact that there is a high chance of “predicting” the future in a negative direction. Christmas rituals end until January 19th.
It is strictly forbidden to spread gossip, slander, cause pain and meanness, because all the negativity will return in triple size. You should not drink alcohol, especially before diving into an ice hole (alcohol does not make the body more resistant to cold, but dampens the body’s actual perception of low temperatures, which can lead to hypothermia, pneumonia and other negative manifestations).
Swearing, thinking “dirty”, and crying are also prohibited. It is believed that the tears released at Epiphany will accompany the whole year. You can’t wash it, because it can defile the water (note to any woman).
You should not leave your shoes outside the door, as this could lead to illness. You cannot throw away garbage, because along with it you can lose your family happiness. But if you get caught in the snow, luck will accompany you.
Signs for the Baptism of the Lord
If the sky on Epiphany is clear and starry, then spring will come early, and the weather in summer will be dry and hot. At the same time, the starry sky at Epiphany indicates that the year will be calm, without any major shocks.
If Epiphany coincides with the phase of the new moon, then the frosts will be severe and long, and the spring will be gloomy and rainy.
A lot of snow on Epiphany is a good sign, because any water on this day has healing powers. So, if snow falls outside the window on Epiphany, this is a sign of good health.
If you hear a dog barking at Epiphany, it means there will be prosperity in your home.
The Slavs had a sign for Epiphany. On the eve of Epiphany, an unmarried girl went out into the yard, and if she came across a young guy on her way, it was believed that the wedding would happen soon.
Source: http://ysia.ru/19-yanvarya-kreshhenie-gospodne-chto-mozhno-i-nelzya-delat-primety/
